76856870517 has 16 divisors (see below), whose sum is σ = 119035155072. Its totient is φ = 43198240320.

The previous prime is 76856870513. The next prime is 76856870521. The reversal of 76856870517 is 71507865867.

It is an interprime number because it is at equal distance from previous prime (76856870513) and next prime (76856870521).

It is not a de Polignac number, because 76856870517 - 2² = 76856870513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76856870513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29997498 + ... + 30000059.

It is an arithmetic number, because the mean of its divisors is an integer number (7439697192).

Almost surely, 2^76856870517 is an apocalyptic number.

It is an amenable number.

76856870517 is a deficient number, since it is larger than the sum of its proper divisors (42178284555).

76856870517 is a wasteful number, since it uses less digits than its factorization.

76856870517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59997628.

The product of its (nonzero) digits is 19756800, while the sum is 60.

The spelling of 76856870517 in words is "seventy-six billion, eight hundred fifty-six million, eight hundred seventy thousand, five hundred seventeen".